Spotify monthly active users

Spotify monthly users worldwide and New York Citi Bike trips per year, on the same upward path. The bike rider is, statistically, listening to Spotify. The earbuds and the helmet, on parallel ascents.

Spotify MAUs grew from about 89 million in 2015 to over 600 million by 2022 as the platform expanded internationally. NYC Citi Bike annual trips grew from about 9 million in 2015 to over 30 million by 2022 as the network expanded into Brooklyn, Queens, the Bronx, and added e-bikes. Two completely independent platform-and-mobility lines sharing a window because the same eight years scaled both: a global audio platform and a single city's bike-share programme, both reaching their respective network-effect tipping points. Different network effects, same era.

Cities and platforms scaled together. The earbuds in one city and the same earbuds in three hundred others.